Roll-bar for pulp-engines



(No Model.)

A. HANKEY.

` ROLL BAR FOR PULP ENGINES. No. 302,399. Patented July 22,1884.

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UNiTED STATES PATENT OFFICE.

.ANTHONY HANKEY, OF ROGHDALE, MASSACHUSETTS.

ROLL-BAR FOR PULP-ENGINES.

SPECIFICATION forming part of Letters Patent No.302,399l dated July 22, 1884.

Application iilefl June 9, 1884. (No model.)

F all whom t may concern,.-

Be it known that I, ANTHONY HANKEY, of Rochdale, in the county of Worcester and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Roll-Bars for Pulp-Engines; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in 'which Figure 1 represents a side View of a section of a roll-bar embracing my present invention; and Fig. 2 represents, upon an enlarged scale, an end view of the same roll-bar.

The nature of my present invention consists in certain improvements upon the rollbar for pulpengines, for which Letters Patent were granted to me on the 13th day of Noveniber, 1883, as will be hereinafter more fully described.

In the drawings, the part marked A represents the rollbar complete, which is to be applied to the rolls of pulp-engines in the usual way.

B represents a slot in the end, by means of which the bars are fastened into the roll.

C represents the back of the roll-bar, which extends to the points marked D D, from which points the Working part of the roll-bar E extends, being made circling or concave from the points DD down to the points marked F F, and from the points F F to the points G G,

the roll-bar is made with parallel sides, thus leaving the roll-bar from the points F F to the points G G of the same thickness as the tion belongs will readily understand and appreciate the advantages of my present improvement, since it is found from actual use that the cutting or operating edges ofroll-bars must always be of -the same thickness as they are Worn off, in order to have them work perfectly and successfully. Consequently, if the sides are circled out from the points D D to the points G G, the edges of the roll-bar will not remain the same, and the edges must be either chipped With a cold-chisel or planed off to their original thickness, in order to se cure uniform and good Work.

As an improved article of manufacture, a roll-bar for pulp-engines having the sides of the Working part E concaved from D D to F F and with parallel sides from the points FF to the points G G, substantially as and for the purposes set forth.

ANTHONY HANKEY. 

